1 Department of Woman, Child, General and Specialistic Surgery, University of Campania "L. Vanvitelli," Naples, Italy; Department of Anesthesia and Cardiac Surgery Intensive Care Unit, San Michele Hospital, Maddaloni, Italy. Electronic address: leonardomaria.bottazzo@studenti.unicampania.it.
2 Department of Anesthesia and Cardiac Surgery Intensive Care Unit, San Michele Hospital, Maddaloni, Italy.
3 Department of Woman, Child, General and Specialistic Surgery, University of Campania "L. Vanvitelli," Naples, Italy.